EM wave polarized in the time direction?

AI Thread Summary
Polarizing an electromagnetic (EM) wave in the time direction is not feasible as time is not a vector quantity and lacks directional degrees of freedom. While photons can be polarized in four directions, the longitudinal and time-like polarizations only manifest as virtual particles. This limitation highlights the fundamental differences between spatial and temporal dimensions in physics. Consequently, the concept of time-based polarization remains theoretical and not applicable in practical scenarios. Understanding these distinctions is crucial for further exploration in electromagnetic theory.
cuallito
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Is it possible to polarize an EM wave in the time direction as you would in any of the spatial dimentions?
 
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cuallito said:
Is it possible to polarize an EM wave in the time direction as you would in any of the spatial dimentions?

Time is not a vector quantity nor does it have degrees of freedom in its direction of progression.
 
Actually photons can be polarised in all 4 directions but the longitudinal and time-like polarisations only exist as virtual particles.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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